Table 1 Patient characteristics.

From: The role of graft T-cell size in patients receiving alemtuzumab serotherapy for non-malignant disorders: results of an institutional protocol

No of patients

26

No of transplants

26

Median age of transplant

5 years (6 months-17.1 years)

Female:Male

8:18

Pretransplant diagnosis

Idiopathic severe aplastic anemia

Thalassemia

Inherited marrow failure syndrome

Congenital amegakaryocytic thrombocytopenia

Hemophagocytic lymphohistiocytosis

Wiskott-Aldrich Syndrome

DOCK8 deficiency

CD40 ligand deficiency

Severe Combined Immunodeficiency

CTLA4 deficiency

Leukocyte Adhesion Deficiency type 1

CSF2RA deficiency

Severe congenital neutropenia

5

4

2

2

3

2

2

1

1

1

1

1

1

Stem cell source

Peripheral blood

26

Lansky score

100

90

80

 <  = 70

20

1

1

4

Conditioning regimens*

 

Fludarabine-Cyclophosphamide

Fludarabine-Treosulfan

Fludarabine-Treosulfan-Thiotepa

Fludarabine

2

8

15

1

Alemtuzumab from day-6 to day-4

0.5 mg/kg

0.9 mg/kg

14

12

GvHD prophylaxis

 

Ciclosporin and mycophenolate mofetil

26

Donor Characteristics

10/10 HLA-matched Family donor (Sibling = 10; Parent = 4)

Matched Family donor with 9/10 bidirectional mismatch

Matched Family donor with homozygous 8/10 in GvH direction

Matched unrelated donor

Matched unrelated donor with 9/10 homozygous allele in GvH direction

14

1

1

8

2

Pre-transplant CMV status (recipient/donor)

pos/pos

pos/neg

neg/pos

On IVIg/pos

19

3

2

2

Pre-transplant EBV status (recipient/donor)

pos/pos

pos/neg

neg/pos

neg/neg

pos/not done

neg/not done

On IVIg/pos

On IVIg/neg

13

1

1

1

4

4

1

1

  1. *Cumulative dose of chemotherapy regimens: Treosulfan < 3 months = 30 gm/m2 × 3, 4 to 12 months = 36 gm/m2, > 1 year = 42 gm/m2; Fludarabine = 160 mg/m2; Thiotepa = 10 mg/kg; Cyclophosphamide = 120 mg/kg for acquired aplastic anemia; Cyclophosphamide = 40 mg/kg for Fanconi anemia.